Pacific Gulf Shipping has suffered its third defeat in US courts in its long-running legal battle with George and Stathis Gourdomichalis.

On Wednesday, US District Judge Alfred Bennett ruled that the low-profile charterer could not continue litigating its alter ego claims against Blue Wall Shipping and other Gourdomichalis-connected companies.

The case was heard at the US federal court for the Southern District of Texas after earlier hearings in an Oregon federal district...